Reflective Obstacle Sensor
The sensor has a I/R LED and a I/R detecting photo transistor. Transistor is connected to a LM393 voltage comparator IC with adjustable trigger level. The detection distance is a function of target reflectivity and shape. The LED indicator turns on when an object is detected (Output switches LOW). The output can be connected directly to a microcontroller port or add a driver transistor to the output, & it could switch a relay or other loads exceeding 20mA.
Power: 3.3V to 5V
Supply Current < 1mA (LEDs off)
LEDs: 2: Red for Power and Green for Detection
Output: Digital TTL Current sink 20mA, 10K Pull-up
Connections: 3Pin, .1in. Pitch Header. L: 47mm OA W: 14mm H: 8mm WT: .02
WARNING: This product can expose you to chemicals including Nickel which is known to the State of California to cause cancer and which is known to the State of California to cause birth defects and/or other reproductive harm. For more information, go to www.P65Warnings.ca.gov
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As of August 2018 the State of California has changed the requirements of the “Prop 65” law. We now must list on our website any possible chemicals the can cause cancer, birth defects or reproductive problem.
As an example:
ABS plastic contains styrene
PVC wire insulation can contain Di(2-ethylhexyl)phthalate (DEHP)
electrolytic capacitors can contain Ethylene glycol
Brass can contain Lead
flame retardant pc boards can contain Tetrabromobisphenol A (TBBPA)
Aluminum alloys can contain Chromium
To put it simply we are a small company and do not have the resources to test every single part, so we list every thing as hazardous. Please recycle all electronic parts responsibly and under no circumstance eat, drink or smoke these parts and wash your hands after touching!
Works perfectly. Or...doesnt work at all, right out of the package. Other than the failure rate, these are great for lots of uses. In pairs, they make nice interrupters up to two feet apart.
- Dirk DeRose, OK
Work very well with an Arduino
I have used these for a signaling system for a model railroad with an Arduino processor. They work very well and are easy to interface. These are good for detecting items. They can easily be adjusted for sensitivity.